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INA114

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1-MHz, 50-μV, 11-nV/√Hz, 3mA-power, precision instrumentation amplifier

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Data sheet

INA114

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 4.5 Input offset (±) (max) (µV) 50 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 11 Features Overvoltage protection CMRR (min) (dB) 115 Input offset drift (±) (max) (V/°C) 0.00000025 Input bias current (±) (max) (nA) 2 Iq (typ) (mA) 2.2 Bandwidth at min gain (typ) (MHz) 1 Gain error (±) (max) (%) 0.5 Operating temperature range (°C) -40 to 85 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.002 Output swing headroom (to negative supply) (typ) (V) 1.3 Output swing headroom (to positive supply) (typ) (V) -1.3 Input common mode headroom (to negative supply) (typ) (V) 1.5 Input common mode headroom (to positive supply) (typ) (V) -1.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.4
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 4.5 Input offset (±) (max) (µV) 50 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 11 Features Overvoltage protection CMRR (min) (dB) 115 Input offset drift (±) (max) (V/°C) 0.00000025 Input bias current (±) (max) (nA) 2 Iq (typ) (mA) 2.2 Bandwidth at min gain (typ) (MHz) 1 Gain error (±) (max) (%) 0.5 Operating temperature range (°C) -40 to 85 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.002 Output swing headroom (to negative supply) (typ) (V) 1.3 Output swing headroom (to positive supply) (typ) (V) -1.3 Input common mode headroom (to negative supply) (typ) (V) 1.5 Input common mode headroom (to positive supply) (typ) (V) -1.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.4
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • LOW OFFSET VOLTAGE: 50µV max
  • LOW DRIFT: 0.25µV/°C max
  • LOW INPUT BIAS CURRENT: 2nA max
  • HIGH COMMON-MODE REJECTION: 115dB min
  • INPUT OVER-VOLTAGE PROTECTION: ±40V
  • WIDE SUPPLY RANGE: ±2.25 to ±18V
  • LOW QUIESCENT CURRENT: 3mA max
  • 8-PIN PLASTIC AND CERAMIC DIP, SOL-16
  • LOW OFFSET VOLTAGE: 50µV max
  • LOW DRIFT: 0.25µV/°C max
  • LOW INPUT BIAS CURRENT: 2nA max
  • HIGH COMMON-MODE REJECTION: 115dB min
  • INPUT OVER-VOLTAGE PROTECTION: ±40V
  • WIDE SUPPLY RANGE: ±2.25 to ±18V
  • LOW QUIESCENT CURRENT: 3mA max
  • 8-PIN PLASTIC AND CERAMIC DIP, SOL-16

The INA114 is a low cost, general purpose instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications.

A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.

The INA114 is laser trimmed for very low offset voltage (50µV), drift (0.25µV/°C) and high common-mode rejection (115dB at G = 1000). It operates with power supplies as low as ±2.25V, allowing use in battery operated and single 5V supply systems. Quiescent current is 3mA maximum.

The INA114 is available in 8-pin plastic and ceramic DIPs, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.

The INA114 is a low cost, general purpose instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications.

A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.

The INA114 is laser trimmed for very low offset voltage (50µV), drift (0.25µV/°C) and high common-mode rejection (115dB at G = 1000). It operates with power supplies as low as ±2.25V, allowing use in battery operated and single 5V supply systems. Quiescent current is 3mA maximum.

The INA114 is available in 8-pin plastic and ceramic DIPs, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.
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Technical documentation

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Type Title Date
* Data sheet Precision Instrumentation Amplifier datasheet 27 Sep 2000
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 27 Jul 2021
Technical article What is an instrumentation amplifier? 09 Aug 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article How to layout a PCB for an instrumentation amplifier 14 Oct 2016
Technical article A six-sided puzzle: VCM vs. VOUT plots for instrumentation amplifiers 10 Jan 2014
Technical article Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) 25 Nov 2013
Application note Use Low-Impedance Bridges on 4-20mA Current Loop 27 Sep 2000

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

INA114 PSpice Model (Rev. B)

SBOM013B.ZIP (61 KB) - PSpice Model
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Simulation model

INA114 TINA-TI Reference Design (Rev. C)

SBOC138C.TSC (93 KB) - TINA-TI Reference Design
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Simulation model

INA114 TINA-TI Spice Model (Rev. A)

SBOM207A.ZIP (4 KB) - TINA-TI Spice Model
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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PDIP (P) 8 View options
SOIC (DW) 16 View options
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